Technique for initialization of encoders and decoders. In some cases, the decoder receives a slice and identifies if the slice is either a forward predicted B-slice or a backward predicted B-slice, and not both a forward and backward predicted B-slice, and based upon this identification initializes, using a P-slice technique, a context associated with the slice.
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7. The apparatus of claim 4, wherein the apparatus further comprises memory, the memory comprising instructions which, when executed by the one or more processors, configures the apparatus as recited in claim 4.
The invention relates to a computing apparatus designed to process and analyze data, particularly in systems requiring real-time or high-performance computations. The apparatus includes one or more processors configured to execute specific computational tasks, such as data processing, analysis, or control operations. The apparatus further includes memory that stores instructions executable by the processors to perform these tasks. The memory may also store data, intermediate results, or configuration settings necessary for the apparatus's operation. The apparatus is structured to efficiently handle data inputs, process them according to predefined algorithms or logic, and produce outputs that can be used for further analysis, decision-making, or system control. The memory ensures that the apparatus can retain and access necessary information during operation, enhancing its functionality and reliability. The overall design aims to optimize performance, reduce latency, and improve accuracy in data-driven applications.
9. The method of claim 8, wherein the flag is indicative of the initialization method for slices of the B slice type and the P slice type.
A method for video encoding or decoding involves managing initialization flags for different slice types in a video frame. The method addresses the challenge of efficiently handling slice initialization in video compression, particularly for B slices (bidirectionally predicted) and P slices (predictively coded). The technique uses a flag to indicate the initialization method for these slice types, ensuring proper decoding and reconstruction of video frames. The flag distinguishes between different initialization approaches, allowing the encoder or decoder to apply the correct method for each slice type. This improves compression efficiency and decoding accuracy by avoiding ambiguity in slice initialization. The method is part of a broader video coding system that processes video data in slices, where each slice may use different prediction techniques. By clearly defining the initialization method for B and P slices, the technique ensures consistent and reliable video reconstruction. The flag-based approach simplifies the encoding and decoding process, reducing computational overhead while maintaining high-quality video output. This method is particularly useful in modern video codecs where efficient slice processing is critical for real-time applications.
10. The method of claim 8, further comprising partitioning the video frame into a plurality of slices comprising the slice.
A method for processing video frames involves partitioning a video frame into multiple slices, where each slice is a segment of the frame. This partitioning is used to improve video encoding, decoding, or transmission efficiency. The slices may be processed independently, allowing for parallel processing or selective transmission of specific regions of the frame. The method may also include encoding or decoding the slices using a video codec, such as H.264, H.265, or AV1, where each slice is treated as a separate unit. This approach can enhance error resilience, as errors in one slice do not necessarily propagate to others. Additionally, the method may involve transmitting slices over a network, where only certain slices are sent based on priority or available bandwidth. The partitioning can be done dynamically, adjusting the number and size of slices based on frame content or processing requirements. This technique is particularly useful in applications like video streaming, surveillance, or real-time communication, where efficient and flexible video handling is critical.
11. The method of claim 8, wherein the first initialization method comprises using a first set of precomputed values to initialize the CABAC context, the second initialization method comprises using a second set of precomputed values to initialize the CABAC context, and the third initialization method comprises using a third set of precomputed values to initialize the CABAC context.
Video encoding systems use Context-based Adaptive Binary Arithmetic Coding (CABAC) to improve compression efficiency by adapting probability models to the encoded data. However, initializing CABAC contexts can be computationally expensive, especially when switching between different encoding modes or scenes. This invention addresses the problem by providing multiple precomputed initialization methods for CABAC contexts, allowing faster and more efficient encoding. The method involves three distinct initialization techniques, each using a different set of precomputed values to initialize the CABAC context. The first method uses a first set of precomputed values, the second method uses a second set, and the third method uses a third set. These precomputed values are optimized for different encoding scenarios, such as intra-frame, inter-frame, or scene change conditions. By selecting the appropriate initialization method based on the encoding context, the system reduces computational overhead while maintaining compression efficiency. This approach is particularly useful in real-time encoding applications where processing speed is critical. The precomputed values may be derived from statistical analysis of common encoding patterns or learned from machine learning models. The invention ensures that CABAC contexts are initialized quickly and accurately, improving overall encoding performance.
12. The method of claim 8, further comprising initializing the CABAC context for the slice using the initialization method.
The invention relates to video encoding and decoding, specifically improving the efficiency of Context-Adaptive Binary Arithmetic Coding (CABAC) in video compression. CABAC is a widely used entropy coding technique that assigns variable-length codes to symbols based on their probabilities, but its performance depends on accurate context modeling. The problem addressed is the initialization of CABAC contexts for video slices, which can lead to inefficiencies if not properly initialized. Improper initialization may result in suboptimal compression or increased bitrate without corresponding improvements in quality. The invention provides a method for initializing CABAC contexts for a video slice using a specific initialization method. This method ensures that the context models are accurately set at the start of each slice, improving compression efficiency and reducing bitrate. The initialization method may involve resetting or adapting context probabilities based on prior data or predefined rules. By properly initializing the CABAC context, the encoding or decoding process becomes more efficient, leading to better compression performance. The method is particularly useful in video coding standards like H.264/AVC or HEVC, where CABAC is a critical component. The invention enhances the overall video coding process by ensuring that context models are optimized from the beginning of each slice, reducing redundancy and improving compression ratios.
14. The apparatus of claim 13, wherein the flag is indicative of the initialization method for slices of the B slice type and the P slice type.
This invention relates to video encoding and decoding, specifically improving the handling of slice types in video compression. The problem addressed is the need for efficient initialization methods for different slice types, particularly B slices (bidirectionally predictive) and P slices (predictively coded), to optimize encoding and decoding processes. The apparatus includes a processor configured to process video data, where the video data is divided into slices of different types, such as B slices and P slices. A flag is used to indicate the initialization method for these slices. The flag provides information about how each slice type should be initialized during encoding or decoding, ensuring proper prediction and reconstruction. The initialization method may involve setting initial reference frames, motion vectors, or other parameters required for accurate prediction. By using a flag to specify the initialization method, the apparatus ensures that B slices and P slices are processed correctly, improving compression efficiency and reducing errors. This approach allows for flexible and adaptive handling of different slice types, enhancing the overall performance of video encoding and decoding systems. The invention is particularly useful in applications where efficient video compression is critical, such as streaming, broadcasting, and video conferencing.
15. The apparatus of claim 13, wherein the one or more processors further configure the apparatus to partition the video frame into a plurality of slices comprising the slice.
This invention relates to video processing, specifically to systems that analyze or encode video frames. The problem addressed is efficiently processing video frames, particularly when dealing with large or complex frames that require division into smaller segments for analysis or encoding. Traditional methods may lack flexibility or efficiency in handling such partitions. The apparatus includes one or more processors configured to process video frames. A key feature is the ability to partition a video frame into multiple slices, where each slice is a segment of the frame. The partitioning can be based on various criteria, such as spatial regions, content complexity, or encoding requirements. The processors further analyze or encode these slices independently, allowing for parallel processing or adaptive handling of different frame regions. This improves efficiency, especially in real-time applications like video streaming or surveillance, where different parts of a frame may require different processing priorities. The system may also adjust partitioning dynamically based on frame content or processing constraints, ensuring optimal performance. The invention enhances video processing by enabling flexible, adaptive segmentation of frames for improved speed and resource utilization.
16. The apparatus of claim 13, wherein the first initialization method comprises using a first set of precomputed values to initialize the CABAC context, the second initialization method comprises using a second set of precomputed values to initialize the CABAC context, and the third initialization method comprises using a third set of precomputed values to initialize the CABAC context.
Video encoding systems use Context-Based Adaptive Binary Arithmetic Coding (CABAC) to improve compression efficiency by adapting to statistical patterns in the data. However, initializing the CABAC context for different encoding scenarios can be computationally expensive and may not always optimize compression performance. This invention addresses the problem by providing multiple initialization methods for the CABAC context, each using distinct sets of precomputed values tailored to different encoding conditions. The apparatus includes a CABAC encoder that selects one of three initialization methods based on the encoding context. The first method initializes the CABAC context using a first set of precomputed values optimized for a specific type of video content or encoding mode. The second method uses a second set of precomputed values suited for another encoding scenario, such as a different resolution or frame type. The third method employs a third set of precomputed values designed for yet another condition, such as high-motion or low-motion content. By precomputing these values, the system avoids real-time calculations, reducing computational overhead while maintaining or improving compression efficiency. The selection of the initialization method can be based on factors like frame type, motion complexity, or encoding parameters, ensuring optimal performance across various encoding scenarios.
17. The apparatus of claim 13, wherein the one or more processors further configure the apparatus to initialize the CABAC context for the slice using the initialization method.
This invention relates to video encoding and decoding, specifically improving the Context-Based Adaptive Binary Arithmetic Coding (CABAC) process for efficient slice-level initialization. The problem addressed is the need for optimized context initialization in video compression, particularly when encoding or decoding video slices, to enhance compression efficiency and reduce computational overhead. The apparatus includes one or more processors configured to initialize the CABAC context for a video slice using a specific initialization method. The initialization method ensures that the CABAC context is properly set up for the slice, which is a segment of a video frame, to improve encoding or decoding performance. The processors may also handle other functions such as encoding or decoding the slice data after initialization, ensuring seamless integration of the context initialization with the broader encoding or decoding pipeline. The invention focuses on the initialization step, which is critical for maintaining consistency and efficiency in the CABAC process. By properly initializing the context, the apparatus avoids inefficiencies that could arise from improper context states, leading to better compression ratios and reduced processing time. The method may involve selecting or deriving initialization parameters based on slice characteristics, such as slice type or coding mode, to tailor the context initialization to the specific requirements of the slice being processed. This approach ensures that the CABAC engine operates optimally for each slice, enhancing overall video compression performance.
18. The apparatus of claim 13, wherein the apparatus further comprises memory, the memory comprising instructions which, when executed by the one or more processors, configures the apparatus as recited in claim 13.
This invention relates to a computing apparatus designed to process and analyze data, particularly in systems requiring real-time or high-speed data handling. The apparatus includes one or more processors configured to execute specific operations, such as data acquisition, processing, and output. The apparatus is further equipped with memory that stores executable instructions, which, when run by the processors, enable the apparatus to perform its intended functions. These functions may include data filtering, transformation, or analysis, depending on the application. The memory stores the necessary software or firmware to configure the apparatus for its designated tasks, ensuring efficient and accurate data processing. The apparatus may be part of a larger system, such as a networked device, a standalone computing unit, or an embedded system, where it processes incoming data streams or interacts with other components to achieve a specific computational goal. The inclusion of memory with executable instructions allows the apparatus to be adaptable, supporting different processing tasks through software updates or configuration changes. This design enhances flexibility and scalability, making the apparatus suitable for various applications, including industrial automation, telecommunications, or data analytics.
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March 21, 2023
April 30, 2024
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